Smoke-precipitator.



G. W. LEN T'.

SMOKE PBBUIPITATOR. y AP'PLmAATIoN FILED nu 2s, 1913.

, 103,304- Patented .July v14, 1914 2 SHEETS-SHEET 1.

C. W. LBNT.

SMOKE PREGIPITATOR.

APPLICATION FILED MAY 26, 1913.

1,103,304. Patented July 14,19%

2 SHEETS-SHEET 2.

IN VEN TOR.

U12/MMM A TTORNE Y.

W1 TNESSES:

,CYRENUS W. LENT, 0F BYRON, CALIFORNIA.

SMOKE-PRECIPITATOR.

Specification of Letters Patent. Application mea my 2e, l191e. i serialNo. massa Patenteaauly. '14, 1914.

To all whom t may conce-rn Be it known that' I, Cr-nnNUs W. LENT, acitizen of the United States, residing at Byron, in the .county ofContra Costa andl State o California, have invented a new and usefulSmoke-Precipitator, of which the following is a specificatlon in suchfull and clear terms as will enable those skilledn the art to constructand use the same.

l This invention relates to anapparatus for the precipitation of thesolid or soluble particles from smoke;

lt will be understood by those skilled in the art that in the operationrof boilers and other industrial furnaces that great` quantities of smokeare frequently emitted therefrom.- This smoke often contains minuteparticles of` carbon, sulfurous dioxid and other impurities, which. areoften the cause of litigationj and complaint upon the part of persons inthe vvicinity of the furnacey and-often cause disturbance for milesthere? from.-

While in the-i present case the invention4 has -been illustrated asapplied to an ordi nary form of uprightboiler, it will be apparl ent tothose skilled in the art that it may be.

applied equally Wel to any furnace having a smoke stack extendingtherefrom.

Another object of `the invention is'to proi vide an apparatus which iscapable of col# lecting solids preci itated in order to per-.mit j therecovery there rom of a useful product, I

as in the case of lamp smoke or quicksilverf g smoke. must pass. A ipipe14 Vconnects the fumes.

Other ,objects will appear as the descrip* i tion proceeds.` l Anembodiment of the invention is Shown* 1n the drawlngs 1n which the samereference numeral lis applied to the same portionf throughout, but I amaware that there are;

. The paddle whee s 17 are each ro'vided many` modifications thereof,

Figure 1 is-a view in side elevation partly;

in section-of the* complete apparatus, Fig. 2 is a side elevation of oneof the wheelsl used for breaking `up the water stream and causing a moreintimate mixture therewith `of.y

the'smoke, Fig. 3 isaportion of one of the i wheels and the bearingthereof used for:

breaking up the water stream, Fig. 4 is a View .of the pump and smokeprecipitating chambersat'right angles `to liig'. 1,and Fig. 5 is a Viewof'the'boiler taken on the liney lt will be understood by those skilledini said =journal bearings` being outside o vcasinggfor the purposeofpreventingrgg:v the the art that any suitable material may. be?`usedifor' the construction of gthe smoke pre;

cipit'atintv,vv chambers, the kind' of Smoke bef ing'treated.determiningthe character' of mtbterial to be yused, eoa l .smokerequiring,noth-` ing more than .a metallicl precipitator while smokecontaining much sulfur; wouldlequire v an insoluble .tihng .to .preventEits rapidde v struction '.Ihe numeral 1l indica-tes an ordinary boiler.`having a'furnace door 2, gage 3 and smoke stack 4. The smokef stack isprovided.y with a damper 5 operatedby. means of thehandle and it.4 has apipe 7 connected therewith, which pipe l extends to vthe smokeprecipitating chambers-The ipe .7 iscon- 10 and .11,.Thepipel0'extendsupwardly and 'is'. conn'ected with the top of, thesmoke preclpltatmg chamber 8, a valve, 12 enabling the quantity of steamdischarged therefrom to beregulated at .will' Within the smokeprecipitat-in .chamber 8 there area number of inclined aiiie plates 13,said plates'overr lapping eachotherat theincenterin such a wayy as to.causethewater discharged from one plate to fall upon the next vplatebelow, thus .making a practically continuous cui`- tam of water throughwhichthe gases and upper smoke preeipitatin chamberwith l the lowerchamber 15. This ower ehaniberhas a lurality of oppositely placed vinclined ba e plates 16, the edges .of said plates being set todischarge uponthe edges ofthe blades of a series of addle wheels 17With, four blades and are journale rin suitablebearings 18 outside 4ofthe casing- 15, the

smoke and anygritty particlesl that might be. therein from injuring saidbeari 11gs. At the bottom the chamber. 15 is provided with the dischargepipe\ 1 9, said pipe beinghoriv Zonta-ll at 2()A to connectwiththesludge tank 2 1, The .pipe 11 is connected-with@ horizontal pipe22, which-latter has a valve 23 while. a pipe 24i`s connected with saidvalve and'fhasa spray nozzle 25 thereon within ,the pipe. 19, The spraynoaalewisgffer vent t e water from -siphonlno down b the opening 26. The.water ischarge plpeemptieslinto awaterf tank 30 the ,purpose of causingthel necessaryvdownwar draft through both of the smoke precipitatingchambers and into the sludge r The sludge tank 21 is of suchdepth andarea as may be necessaryto collect the solid particles from the givenplant. It is provided with a discharge lip 26 and awater discharge pipe27 ,the latter having anv upwardl turned portion 28 and vent 29- to'pre-Afromwhich the water supplypipe 31' extends-to a suitable pump' 'S2-saidpump'having a plpe 33 ex- .tendm therefrom and discharging into thevertica pipe at the top of the first smoke precipitating chamber. n l jFrom the foregoing it-'will be clearth'at in operation Athe ire'lsstarted in the boiler furnace,`a damper in the smoke stack 'being leftopenluntil said re raises suflicient steam. to discharge the same 'into'the t'op precipitating chamber 4and out i the spray nozzle 25. Thesupplyof steamlet into the top precipitating chamber is for the pur-'posel'o'f humidifying the smoke to suchv an 'extent-'asmay becomenecessary to cause either the solid orsoluble particles therein to fbeeither 'precipitated -in or dissolvedby the: 'wa-ter, while the purposeof humidiifying the smoke and smoke particles will float tof'crea'te thenecessary draft' for the furnace', 'all excess gas passing of from ltheprecipitating" tank by Way' of the. ventpipe 33. After the boiler hasgot up steam, a certain amount'is allowed to discharge into the' uppersmoke precipitating chamber andv va` sullicient amount to cause thenecessary the spray nozzle,

draft is discharged from '25, whereupon thedamper 5 may be closedandjall of the smoke will be passed through the smokeprecipitatingchambers whereupon the pump may be started and will dis-jvcharge water into the. top/of the upper smoke precipitating chamber,which Water will pass therethrough from one baliie plate'.

to the other in the form of a thin curtain which 'will compel the smoketo pass therethrough, and as the water passes -down 'intothe secondsmoke precipitating chamber;` itA will discharge at lthe lower edges ofthe 'bathe plates 16 on tothe blades of the wheels 17, causing thelatter to beat up the particles of water with the smoke, thuseffectively precipitating the solid particles or dissolving solubleparticles in the Water, andas the mass of water and soluble particlespass downwardv it is discharged into the tank 21', thesolid particlescollecting in the bottom thereof as sludge. Since more -or less of theupon the top of the water as a screen there is an opening in theside ofthe tank 21 adjacent'the discharge lip 26 to permitthisv scum` to" betank rcipitatingchamber having a the spray'nozzle 25 is for' .thecombination of l nace, a flue leading yfrom tv smoke through both ofportion ofthe receptacle 21, the'object being to prevent the the tank30, while ting ample l depth heavysludge. Having' th'us. described myinvention what I claiml as new 'and' desire to secure by Letters Patentofl the United lows, modifications 'Within scum from passingl into atthe same-time permitof the ftank tof collect y'claims being expresslyreservedz.

'1. An apparatus forthe precipitationof smoke comprising in'combinationa steam generator, A.a furnace therefor, a iiueextending away ,from saidfurnace, a'smoke'pre- States, is as folf 'the scope of the plurality ofbaiiie plates therein, Ameans to deliver af'- strea'm of water uponsaidbatlieplateavpipe connect-ions to deliver steam intov saidchamthrough, a sludge tank into'which the Wa` 'ber and to induce a gascurrent there-fter-,"steaml and smoke are-discharged, `and a pipe todischarge the water. from said sludge tank to a 'tank 'from which thewater is pumped to the smoke precipitation chamber, substantially asdescribed;-l v 4 2.' In a smoke precipitationl apparatus,

a steam eneratona fure furnace to 'a smoke precipitation chamber, aplhrality of overlapping vinclined baffle plates' in, said chamber,means to deliver a stream of water upon said bathe-plates, a secondsmbke -pre- Vcipita'tion chamber with which the first chambercommunicates, inclined baliieplfates and revoluble wheels in saidsecond' chamber t0 mix, the smoke and water passing therethrough, a.sludge tank, pipe connections from the steam generator steam and forinducing the movement -of chambersI and' into lthe sludge tank, andlmeans to return the water froml the sludge tank to the smokeprecipitation chambers for reuse, 'substantia ly as described,

3. A smoke prising the combination of a steam. generator, a furnace,nace and connectedl with a smoke precipitation chamber, a lplurality ofoverlapping baiile plates therein a chamber adapted to deliver a streamo waterinto 'the top of for supplying the i first smoke precipitationchamber with said l precipitation precipitation apparatus comi-jl i aiue leading fromthefurducin said smoke precipitation chamber, and uponsaid baille plates, a second precipitation 'ch amber'having a pluralityof inclined baff He plates therein, revoluble paddle Wheels under thelower edges of ,the baiiie plates and in the second precipitationchamber and capable of being rotated. by the waterv 'passing over theedges of said baie plates,

steam connections for supplying the smoke precipitation chambers'withsteam for inthe movement of smoke and gas theret rough, and a sludgetank into which the Water and smoke are discharged, sub-y stantially asdescribed.

4:. In an apparatus for the precipitation of smoke, the combination of asteam gen- 'erator,.a furnace, a ue leading from said furnace, a smokeprecipitation chamber 'with which said flue is connected, a plurality ofoppositely disposed,.overlapping inclinedbaie plates in said chamber, apump for discharging water into lthe top of said chamber and upon saidbathe plates, a steam pipe for delivering steam into thetop' ofv saidprecipitation chamber, a second chamber connected with the first one andhaving a series of oppositely inclined bai'e plates therein, a.plurality of paddle'wheels in said second chamber, each adapted tobefrotated by the'water passing o the several baiile plates, a sludgetank,a pipe connecting the second smoke precipitation chamber with thesludge tank, and a steam spray nozzle in lsaid pipe to induce the travelof smoke and gases through said chambers, substantially as described.

In testimony whereofl I have hereunto set 'my hand this 19 day of May A.D. 1913,

in the presence of the two subscribed witnesses.

C. W. LENT.- `Witnesses:

C. PrGn'ni'rlN,

HENRY B. LIs'rER.

